WO2014112720A1

WO2014112720A1 - Method for protecting binary data in non-volatile memory and apparatus therefor

Info

Publication number: WO2014112720A1
Application number: PCT/KR2013/011504
Authority: WO
Inventors: 박대진; 이광희
Original assignee: 어보브반도체 주식회사
Priority date: 2013-01-18
Filing date: 2013-12-12
Publication date: 2014-07-24
Also published as: US20150324613A1; KR101416685B1; CN104919468A; JP2016508629A

Abstract

Disclosed are a method for protecting binary data in a non-volatile memory and an apparatus therefor. The method for protecting binary data in a non-volatile memory, according to one embodiment of the present invention, comprises: a step of receiving a program code; a step of detecting a binary pattern of binary data constituting the program code by analyzing the received program code; a step of generating unique pattern information corresponding to the binary pattern on the basis of the detected binary pattern; a step of encrypting the program code using the generated unique pattern information; and a step of storing the encrypted program code in a memory. The step of encrypting encrypts the program code by further considering the production-specific information of the memory and/or chip-specific information of the memory, or encrypts the program by further considering at least one of user information or time or date information, so that the program code can be adaptively encrypted and stored in each non-volatile memory, thereby improving the level of protection for the binary data in the non-volatile memory.

Description

Binary data protection method of nonvolatile memory and device therefor

The present invention relates to the protection of binary data in non-volatile memory. Specifically, program code to be stored in non-volatile memory includes a binary pattern of program code, unique information related to non-volatile memory, and further user information and The present invention relates to a method and apparatus for protecting binary data of a nonvolatile memory capable of improving the level of protection for binary data of the nonvolatile memory by encrypting using time / date information or the like.

Flash memory is nonvolatile, which means that flash memory stores information on a semiconductor in a manner that does not require power to maintain the information on the chip. Flash memory stores information in an array of transistors called "cells", each of which stores one or more bits of information. Memory cells are based on Floating-Gate Avalanche-Injection Metal Oxide Semiconductor (FAMOS) transistors, which are essentially complementary metals (CMOSs) with additional conductors suspended between the gate and source / drain terminals. Oxide Semiconductor) FET (Field Effect Transistor). Current flash memory devices consist of two basic array architectures. Names indicating the type of NOR flash and NAND flash logic are used in the storage cell array.

Flash cells are similar to standard MOSFET transistors except that they have two gates instead of just one gate. One gate is the same as a control gate (CG) in other MOS transistors, and the other is a floating gate (FG) insulated all around by an oxide layer. Since the FG is insulated by its oxide layer, any electrons placed on it are trapped there and thus store information.

When electrons are trapped on the FG, they modify (partially cancel) the electric field from CG, which modifies the threshold voltage (Vt) of the cell. Thus, when a cell is " read " by making CG a specific voltage, current will or will not flow between the cell's source and drain connections depending on the cell's Vt. The presence or absence of such a current can be sensed and converted to '1' or '0', whereby the stored data is reproduced.

Non-volatile memory, such as the above-described flash memory stores a program unique to the manufacturer and is used for specific control purposes, and in order to prevent illegal leakage of such a program, a password cannot be used without knowing the password. .

The conventional non-volatile memory read protection circuit combines the data of the encryption unit having a specific program and the data of the non-volatile memory cell unit with exclusive NOR (XNOR, exclusive NOR) to prevent another person from illegally using the program contents of the nonvolatile memory. However, if the number of unprogrammed cells of the nonvolatile memory cell is larger than the number of cells in the cipher cell, the data obtained by combining the data of the unprogrammed cell of the memory cell with the data of the cipher part is the same as the data of the cipher part. There is a problem that negative data is easily exposed so that programs stored in nonvolatile memory are illegally leaked.

Therefore, there is a need for a configuration that can prevent illegal leakage of a program stored in a nonvolatile memory. As a prior art developed to prevent illegal leakage of a program stored in a nonvolatile memory, Korean Patent No. 10-0258861 has proposed a read protection circuit of a nonvolatile memory.

The prior art is a read-protection circuit of a nonvolatile memory, which is adapted to change the address signal applied according to a scramble weight bit and the address of an actual memory cell so that others cannot read the program of the nonvolatile memory. The present invention relates to preventing the disclosure of a password to prevent illegal leakage of a program.

That is, the prior art is to prevent the exposure of the password, and if the same program is encrypted and stored in the nonvolatile memory, since the data stored in the encrypted are all the same, repeated analysis of the encrypted pattern to infer the encryption algorithm and password Therefore, there is a need for a configuration that can prevent the leakage of a program by encrypting using a different encryption key when encrypting the same program.

The present invention is derived to solve the problems of the prior art as described above, when storing the same program code in a nonvolatile memory, the binary pattern of the program code, the unique information associated with the nonvolatile memory, and further user information and time / date information, etc. It is an object of the present invention to provide a method and apparatus for protecting binary data of a nonvolatile memory, which can improve the level of protection for binary data of the nonvolatile memory by encrypting the data using the encryption method.

The present invention also provides a method for protecting binary data of a nonvolatile memory capable of adaptively encrypting program codes for each memory without using complicated encryption hardware by encrypting and storing program codes differently for each nonvolatile memory. It is an object to provide the device.

In order to achieve the above object, a binary data protection method of a nonvolatile memory according to an embodiment of the present invention comprises the steps of receiving a program code; Analyzing the received program code to detect a binary pattern of binary data constituting the program code; Generating unique pattern information corresponding to the binary pattern based on the detected binary pattern; Encrypting the program code by using the generated unique pattern information; And storing the encrypted program code in a memory.

The encrypting may further encrypt the program code by considering at least one of manufacturing unique information of the memory and chip unique information of the memory, and further considering the user information and at least one of time or date information. You can also encrypt the code.

Furthermore, the method according to the present invention comprises the steps of decrypting the encrypted program code stored in the memory using the unique pattern information; And reading the decrypted program code.

Furthermore, the method according to the present invention further comprises storing the generated unique pattern information in a predetermined storage area, wherein the decrypting comprises the encrypted program code using the stored unique pattern information. Can be deciphered.

Furthermore, the method according to the invention further comprises the step of dividing the received data area of the program code into a plurality of areas, wherein the detecting step is performed by the data of each of the divided plurality of areas. Detecting a data pattern, and generating the data pattern generates unique data pattern information of data for each of the plurality of areas based on the detected data pattern, and encrypting the generated data pattern Data for each of the plurality of areas may be encrypted using the information.

Furthermore, the method according to the invention further comprises the step of dividing the received data area of the program code into a plurality of areas, wherein the detecting step is performed by the data of each of the divided plurality of areas. The data pattern may be detected, and the binary pattern may be detected using the detected data pattern.

An apparatus for protecting binary data of a nonvolatile memory according to an exemplary embodiment of the present invention may include a receiver configured to receive a program code; A detector configured to analyze the received program code to detect a binary pattern of binary data constituting the program code; A generation unit configured to generate unique pattern information corresponding to the binary pattern based on the detected binary pattern; An encryption unit for encrypting the program code using the generated unique pattern information as a key value; And a storage unit for storing the encrypted program code in a memory.

According to the present invention, when the same program code is stored for each nonvolatile memory, the program code is adaptively encrypted and stored, thereby improving the level of protection for binary data of the nonvolatile memory.

Specifically, the present invention encrypts the program code by using the binary pattern of the program code to be stored, the unique information related to the non-volatile memory, and further user information and time / date information, and the encrypted program code to the non-volatile memory In addition, it can improve the level of protection for binary data in nonvolatile memory.

Furthermore, since the present invention can store differently encrypted program codes for each nonvolatile memory without using complicated encryption hardware, it is possible to improve the level of protection for the program codes stored in the nonvolatile memory and to lower the cost of the device. Can improve.

1 illustrates a configuration of an apparatus for protecting binary data of a nonvolatile memory according to an embodiment of the present invention.

FIG. 2 illustrates a configuration of an embodiment of the detector illustrated in FIG. 1.

3 is a flowchart illustrating a method of protecting binary data in a nonvolatile memory according to an embodiment of the present invention.

4 is a flowchart illustrating an embodiment of operation S360 shown in FIG. 3.

FIG. 5 is a flowchart illustrating another exemplary operation for step S360 illustrated in FIG. 3.

FIG. 6 shows an operation flowchart of an embodiment of step S330 shown in FIG. 3.

FIG. 7 shows an operational flowchart of an embodiment of a method of reading the program code stored by FIG. 3.

8 illustrates an example of a process of generating unique pattern information from binary data of a program code.

9 illustrates an example of a process of encrypting binary data of a program code.

Other objects and features of the present invention in addition to the above object will be apparent from the description of the embodiments with reference to the accompanying drawings.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the term "comprises" and the like is intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features, numbers, steps It is to be understood that the present invention does not exclude in advance the possibility of the presence or the addition of operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

However, the present invention is not limited or limited by the embodiments. Like reference numerals in the drawings denote like elements.

Hereinafter, a method and apparatus for protecting binary data of a nonvolatile memory according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 9.

Referring to FIG. 1, a device according to the present invention includes a receiver 110, a detector 120, a generator 130, an encryption unit 140, a storage unit 150, a nonvolatile memory 160, and pattern information storage. The unit 170, the decryption unit 180, and the reading unit 190 are included.

The receiver 110 receives a program code to be stored in the nonvolatile memory 160 from the outside.

In this case, the receiving unit 110 may receive the program code through an apparatus or a program capable of generating the program code, and also through an external storage means storing the program code.

The detector 120 analyzes the program code received by the receiver 110 to detect a binary pattern of binary data constituting the program code.

At this time, the detector 120 may detect the binary pattern based on the pattern of the bit value '1' of the program code, or may detect the binary pattern based on the pattern of the bit value '0'.

For example, as illustrated in FIG. 8, the detection unit k-th 8-bit binary data E [7: 0] [k] for 64 KB of binary data E [7: 0] [0: 65535]. And a predetermined pattern detection value may be combined and repeated for 64 KB to detect a binary pattern for 64 KB of binary data.

In addition, the detector 120 may divide the binary data area for the program code into a plurality of areas, and then detect a data pattern for each of the divided data areas, and further, the data for each of the detected plurality of data areas. The binary pattern may be detected using the pattern. In FIG. 2, a plurality of areas are divided to detect a plurality of data patterns.

Referring to FIG. 2, the detector 120 includes a divider 210 and an area pattern detector 220.

The divider 210 divides a data area of a program code, that is, a data area of binary data into a plurality of areas.

In this case, the dividing unit 210 may divide the binary data into a predetermined number of data areas, or may divide the binary data of the program code into units of a predetermined area.

The area pattern detector 220 detects a data pattern of data for each of the plurality of data areas divided by the divider 210.

That is, the area pattern detection unit 220 detects a plurality of data patterns for a plurality of data areas of the program code.

In this case, the area pattern detector 220 may detect the data pattern of the data area in consideration of the pattern of the neighboring data area.

As illustrated in FIG. 8, the region pattern detector 220 may detect data patterns for each of the plurality of data regions using a predetermined pattern detection value.

Referring back to FIG. 1, the generation unit 130 generates unique pattern information corresponding to the binary pattern based on the binary pattern detected by the detection unit 120.

In this case, the generation unit 130 may generate the unique pattern information corresponding to the binary pattern detected by the detection unit 120 using a data table in which the unique pattern information corresponding to the binary pattern information is stored in advance. The unique pattern information corresponding to the binary pattern may be generated using a predetermined function using information as a variable.

For example, the generation unit 130 may generate unique pattern information using Secure Hash Algorithm (SHA-1), and as shown in FIG. 8, CRC (Cyclic Redundancy) for inputting unique pattern information of binary data. Check) -16 may be used to generate 16-bit unique pattern information (fingerprint [15: 0]) corresponding to the pattern of binary data. That is, the unique pattern information generated by the generation unit is information uniquely generated according to the binary data of the program code, and may have information such as 8 bits, 16 bits, 32 bits, etc. according to the method of generating the unique pattern information. As shown in the example of FIG. 8, the unique pattern information may be generated by repeatedly performing the corresponding byte number (here, 64k = 65536 times) of the program code.

Of course, when the data pattern for the plurality of data areas is detected by the detector 120, the generation unit 130 may generate a plurality of pieces of unique data pattern information corresponding to each of the plurality of data patterns.

In this case, the generation unit 130 may generate unique pattern information of the program code by using the plurality of unique data pattern information.

The pattern information storage unit 170 stores the unique pattern information generated by the generation unit 130 or the unique data pattern information for each data area.

In this case, the information stored in the pattern information storage unit 170 may be used when the decryption unit 180 decrypts the data stored in the nonvolatile memory 160, that is, the encrypted program code.

The pattern information storage unit 170 may store the unique pattern information or the unique data pattern information in a portion of the nonvolatile memory 160 or may store the unique pattern information or the unique data pattern information in a storage unit provided separately. .

Encryption unit 140 is a configuration for encrypting the binary data of the program code using the unique pattern information generated by the generation unit 130, the algorithm used for encryption may be a predetermined encryption algorithm, a plurality of algorithms May be a randomly selected encryption algorithm. That is, the encryption unit 140 may generate an encryption key using the unique pattern information, and encrypt the program code using the generated encryption key.

At this time, the encryption unit 140 may encrypt the program code by using an exclusive logical OR combination of each bit value of the generated encryption key and the bit value of the program code.

When the generation unit 130 generates a plurality of pieces of unique data pattern information, the encryption unit 140 may encrypt each of the plurality of data areas using the unique data pattern information of each of the plurality of divided data areas. .

Further, the encryption unit 140 may encrypt the program code by further considering at least one of manufacturing unique information of the nonvolatile memory and chip specific information of the nonvolatile memory as well as the unique pattern information.

For example, as illustrated in FIG. 9, the encryption unit 140 receives a seed unique value (Fab ID) of the nonvolatile memory and chip unique information (Chip ID) of the nonvolatile memory from the seed generator. [15: 0]) and outputs the value (K [7: 0]) for the exclusive logical sum (XOR) combination between each bit of the generated seed value, and the first 8 bits of the binary data of the original program code. Performs an exclusive logical sum combination between (E [7: 0] [1]) and each bit of the first output value K [7: 0], and output value and unique pattern information (A) according to the execution of the exclusive logical sum combination By performing the exclusive logical sum combination again on the value M [7: 0] output by the exclusive logical sum combination between each bit of [15: 0]), the corresponding original data E [7: 0] [1] is obtained. The data is converted into encrypted data I [7: 0] and output. This process is repeated for all data of the original program code, so that the binary data of the original program code can be changed to encrypted data. For example, assuming that the binary data of the program code is 64 KB, the binary data of the original program code may be converted into encrypted data by performing the processing shown in FIG. 9 65536 times.

The seed generator illustrated in FIG. 9 may generate seed values S [15: 0] of 16 bits at a time using manufacturing unique information (Fab ID) and chip unique information (Chip ID), but is not limited thereto. An 8-bit seed value (S [7: 0]) is generated using the manufacturing unique information (Fab ID), and an 8-bit seed value (S [15: 8]) is generated using the chip unique information (Chip ID). You can also create each.

As can be seen in Figure 9, the apparatus according to the present invention, even if the program code is the same, since at least one of the manufacturing-specific information and the chip-specific information of the nonvolatile memory is different, the program code encrypted and stored in the nonvolatile memory are all different As a result, a unique encryption result appears for the same program code. As a result, even if the encrypted program code stored in the nonvolatile memory is analyzed repeatedly, it is difficult to obtain an encryption method because it is encrypted by different encryption results, and thus the program code can be prevented from leaking.

Furthermore, the encryption unit 140 may encrypt the program code by considering not only the unique pattern information but also at least one of user information and time or date information using the apparatus of the present invention.

Of course, the encryption unit 140 may encrypt the program code in consideration of both manufacturing specific information of the nonvolatile memory, chip specific information of the nonvolatile memory, user information, and time or date information.

At this time, it is apparent that the information used when encrypting the program code in the encryption unit 140 should be stored in a predetermined storage area so that the decryption unit 180 can use it when decrypting the program code.

The storage unit 150 stores the program code encrypted by the encryption unit 140 in the nonvolatile memory 160.

In this case, when the data for each of the plurality of data areas is encrypted, the storage unit 150 may store the encrypted data for each of the plurality of data areas in the corresponding area of the nonvolatile memory 160.

The decryption unit 180 is a means for decrypting the program code stored in the nonvolatile memory 160, that is, the encrypted program code. Information used when storing the program code, for example, unique pattern information of the program code, and nonvolatile memory The program code stored in the nonvolatile memory 160 is decoded by using the manufacturing peculiar information, the chip peculiar information of the nonvolatile memory, the user information and the time or date information.

At this time, the decryption unit 180 uses the decryption algorithm corresponding to the encryption algorithm and the inherent pattern information of the program code stored in the pattern information storage unit 170 used when encrypting the program code in the encryption unit 140. The program code stored in the volatile memory 160 may be decrypted. Of course, when the encryption unit 140 encrypts a plurality of data areas, respectively, when encrypting the program code, the decryption unit 180 uses the plurality of unique data pattern information stored in the pattern information storage unit 170. The data of the program code for each of the data areas can be decoded.

The reading unit 190 reads the program code decrypted by the decryption unit 180.

As described above, the apparatus according to the present invention uses program pattern information using the unique pattern information of the binary data for the program code, the manufacturing unique information of the nonvolatile memory, the chip unique information of the nonvolatile memory, the user information and the time or date information, and the like. Since the same program code is encrypted in the nonvolatile memory, the program code is encrypted differently for each nonvolatile memory. Thus, the level of protection for binary data in the nonvolatile memory can be improved without using complicated encryption hardware.

FIG. 3 is a flowchart illustrating a method of protecting binary data of a nonvolatile memory according to an embodiment of the present invention, and is a flowchart of the operation of the apparatus illustrated in FIG. 1.

Referring to FIG. 3, the method according to the present invention receives a program code to be stored in a nonvolatile memory, and analyzes the received program code to detect binary patterns of binary data included in the program code (S310 to S330).

In this case, step S320 may analyze the program code using the bit values '0' and '1' of the binary data, and step S330 may be a bit value of the binary data obtained through program code analysis, for example, a bit value. The binary pattern can be detected using '1' or '0'.

When the binary pattern for the program code is detected in step S330, unique pattern information corresponding to the binary pattern is generated based on the detected binary pattern (S340).

In this case, the unique pattern information may be m bits of information corresponding to the binary pattern, and the unique pattern information may include a function that uses a data table or binary pattern information for the prestored binary pattern and the unique pattern information as variables. It may be generated or obtained through, or may be obtained through an algorithm for generating an encryption key.

The unique pattern information generated in step S340 is stored in a predetermined storage area, and the program code is encrypted using the generated unique pattern information (S350 and S360).

Of course, when the program code is encrypted using the unique pattern information, an encryption key may be generated using the unique pattern information, and the program code may be encrypted using the generated encryption key. Depending on the situation, the unique pattern information itself may be used as the encryption key.

The program code encrypted by the unique pattern information is stored in the nonvolatile memory (S370).

In encrypting the program code of step S360 of the above steps, in order to generate a differently encrypted program code for each nonvolatile memory, the program code may be encrypted using additional information as well as unique pattern information of the program code. 4 and 5 will be described as an example.

4 is a flowchart illustrating an embodiment of operation S360 shown in FIG. 3.

Referring to FIG. 4, in the step of encrypting the program code (S360), the manufacturing unique information and the chip unique information of the nonvolatile memory in which the program code is to be stored are confirmed (S410).

Here, the manufacturing unique information of the nonvolatile memory may be a manufacturing number of the corresponding nonvolatile memory, which may be a FAB (fabrication) ID, and the chip unique information of the nonvolatile memory may be a product number (CHIP ID) of the corresponding nonvolatile memory. Such manufacturing specific information and chip specific information may be stored in a predetermined storage area or may be encrypted and stored inside the device so that it cannot be externally verified.

If the manufacturing unique information and the chip specific information of the nonvolatile memory are confirmed in step S410, the program code is encrypted using the manufacturing unique information of the nonvolatile memory, the chip specific information, and the unique pattern information generated in step S340 (S420). ).

Similarly, step S420 may generate an encryption key using unique pattern information, manufacturing unique information, and chip unique information, and encrypt the program code using the generated encryption key.

Referring to FIG. 5, in the step of encrypting the program code (S360), the user information of the user who uses the corresponding device or the program code stored in the nonvolatile memory, and the time or date information of the corresponding device are checked (S510). .

In this case, the user information may be stored in a predetermined storage area or may be encrypted and stored inside the device so that it cannot be checked externally, and time or date information may be obtained from a device of the present invention or a device on which the device of the present invention is mounted. .

If the user information, time or date information is confirmed in step S510, the program code is encrypted using the user information, time or date information, and the unique pattern information generated in step S340 (S520).

Similarly, step S520 may generate an encryption key using unique pattern information, user information, time or date information, and encrypt the program code using the generated encryption key.

Referring to FIG. 6, in the detecting of the binary pattern (S330), the data area for binary data of the program code is divided into a plurality of data areas (S610).

Here, in step S610, the binary data may be divided into a predetermined number of data areas, or the binary data of the program code may be divided into predetermined area units.

When the data patterns are divided into a plurality of data regions in operation S610, a data pattern of data of each of the plurality of divided data regions is detected (S620).

Furthermore, in the method according to the present invention, when a data pattern for each of the plurality of data areas is detected in step S620, the binary pattern of the program code may be detected using the detected plurality of data patterns. That is, the binary pattern may be detected by using a combination of the plurality of data patterns or a table of the plurality of data patterns.

In addition, the program code of FIG. 3 may be encrypted by directly using the plurality of data patterns detected by step S620. That is, when a plurality of data patterns are detected in step S620, unique data pattern information of data for each of the plurality of divided data regions is generated based on each of the detected plurality of data patterns, and the generated plurality of unique Data of each of the plurality of areas for the program code is encrypted using the data pattern information.

Referring to FIG. 7, in order to read the program code stored in the nonvolatile memory, the unique pattern information of the program code stored in the predetermined storage area is checked, and the encrypted program code stored in the nonvolatile memory using the identified unique pattern information. Decode the (S710, S720).

Of course, if the program code is encrypted using not only the unique pattern information but also at least one or more of manufacturing unique information, chip unique information, user information, time or date information of the nonvolatile memory, the encrypted program code may be decrypted in step S720. When the program code is decrypted using at least one or more of the unique pattern information used to encrypt the program code and manufacturing unique information of the nonvolatile memory, chip unique information, user information, time or date information.

When the program code stored in the nonvolatile memory is decrypted, the decrypted program code is read (S730).

The binary data protection method of the nonvolatile memory according to an embodiment of the present invention may be implemented in the form of program instructions that may be executed by various computer means and may be recorded in a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the media may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

In the present invention as described above has been described by the specific embodiments, such as specific components and limited embodiments and drawings, but this is provided to help a more general understanding of the present invention, the present invention is not limited to the above embodiments. For those skilled in the art, various modifications and variations are possible from these descriptions.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and all of the equivalents and equivalents of the claims, as well as the following claims, will fall within the scope of the present invention. .

Disclosed are a method and apparatus for protecting binary data of a nonvolatile memory. A method of protecting binary data in a nonvolatile memory according to an embodiment of the present invention includes: receiving a program code; Analyzing the received program code to detect a binary pattern of binary data constituting the program code; Generating unique pattern information corresponding to the binary pattern based on the detected binary pattern; Encrypting the program code by using the generated unique pattern information; And storing the encrypted program code in a memory, wherein the encrypting comprises encrypting the program code in consideration of at least one of manufacturing unique information of the memory and chip specific information of the memory. And encrypting the program code in consideration of at least one of time and date information, thereby adaptively encrypting and storing the program code for each nonvolatile memory, thereby improving the protection level of the binary data of the nonvolatile memory. Can be improved.

Claims

Receiving a program code;

Analyzing the received program code to detect a binary pattern of binary data constituting the program code;

Generating unique pattern information corresponding to the binary pattern based on the detected binary pattern;

Encrypting the program code by using the generated unique pattern information; And

Storing the encrypted program code in a memory

Binary data protection method of a non-volatile memory comprising a.
The method of claim 1,

The encrypting step

And encrypting the program code by further considering at least one of manufacturing peculiar information of the memory and chip peculiar information of the memory.
The method of claim 1,

The encrypting step

And encrypting the program code by further considering user information and at least one of time or date information.
The method of claim 1,

Decrypting the encrypted program code stored in the memory using the unique pattern information; And

Reading the decrypted program code

The binary data protection method of the non-volatile memory, characterized in that it further comprises.
The method of claim 4, wherein

Storing the generated unique pattern information in a predetermined storage area

More,

The deciphering step

And decrypting the encrypted program code using the stored unique pattern information.
The method of claim 1,

Dividing a data area of the received program code into a plurality of areas

More,

The detecting step

Detecting a data pattern of data for each of the divided plurality of regions,

The generating step

Generating unique data pattern information of data for each of the plurality of areas based on the detected data pattern,

The encrypting step

And encrypting data for each of the plurality of regions by using the generated unique data pattern information.
The method of claim 1,

Dividing a data area of the received program code into a plurality of areas

More,

The detecting step

And detecting a data pattern of data of each of the divided plurality of regions, and detecting the binary pattern by using the detected data pattern.
A computer-readable recording medium in which a program for executing the method of any one of claims 1 to 7 is recorded.
A receiving unit for receiving a program code;

A detector configured to analyze the received program code to detect a binary pattern of binary data constituting the program code;

A generation unit configured to generate unique pattern information corresponding to the binary pattern based on the detected binary pattern;

An encryption unit for encrypting the program code using the generated unique pattern information as a key value; And

A storage unit for storing the encrypted program code in a memory

Binary data protection device of a nonvolatile memory, comprising a.
The method of claim 9,

The encryption unit

And encrypting the program code by further considering at least one of manufacturing peculiar information of the memory and chip peculiar information of the memory.
The method of claim 9,

The encryption unit

And encrypting the program code by further considering user information and at least one of date or time information.
The method of claim 9,

A decryption unit for decrypting the encrypted program code stored in the memory using the unique pattern information; And

A reading unit that reads the decrypted program code

Binary data protection device of a nonvolatile memory, characterized in that it further comprises.
The method of claim 12,

A pattern information storage unit for storing the generated unique pattern information in a predetermined storage area

More,

The decryption unit

And decrypting the encrypted program code by using the unique pattern information stored in the pattern information storage unit.
The method of claim 9,

A divider divides the data area of the received program code into a plurality of areas.

More,

The detection unit

Detecting a data pattern of data for each of the divided plurality of regions,

The generation unit

Generating unique data pattern information of data for each of the plurality of areas based on the detected data pattern,

The encryption unit

And encrypting data for each of the plurality of areas by using the generated unique data pattern information.
The method of claim 9,

A divider divides the data area of the received program code into a plurality of areas.

More,

The detection unit

And detecting a data pattern of data of each of the divided plurality of regions, and detecting the binary pattern using the detected data pattern.